Mitosis is a process of cell duplication during which one cell gives rise to two genetically identical daughter cells.
meiosis a division of germ cells involving 2 fussions of the nucleus and giving rise to four gamates, each possessing half the number of chromosomes of the origional cell.
umm . this answer is not complete .
Answer: <span>C, They add to its hardness.
</span>Calcium is naturally dissolved in water, it can be
found in water as Ca2+ ions and causes <span><span><span>water hardness.</span> C</span>omes from rocks
such as limestone, marble, calcite, dolomite, gypsum, fluorite and
apatite. It can also be a ph stabilizer.
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An independent variable<span> is the variable that is changed or controlled in a scientific experiment to test the effects on </span>the dependent variable.
<span>A </span>dependent variable<span> is the variable being tested and measured </span>in a scientific experiment<span>.</span>
